Two-Dimensional Kinetic Shape Dynamics: Verification and Application

Figure 9

The motion of a kinetic board during usage. As the user loads the back kinetic shape with their weight, the kinetic shape reacts by rolling with a predefined and known horizontal ground reaction force. As the kinetic shape rolls, it flips onto two small rollers attached to the perimeter of the kinetic shape. The engagement of these rollers enables the angular kinetic shape rotation to be transferred into linear motion. The user subsequently pivots over a middle roller to load the front kinetic shape, which reacts with the same mechanism. By simply rocking back and forth, the user is able to continuously propel oneself forward.